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Wyszukujesz frazę "Pilarczyk, W." wg kryterium: Autor


Wyświetlanie 1-4 z 4
Tytuł:
Study of atoms arrangement in Zr-based bulk metallic glass structure
Autorzy:
Pilarczyk, W.
Podwórny, J.
Powiązania:
https://bibliotekanauki.pl/articles/1065200.pdf
Data publikacji:
2016-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.05.cp
61.25.Mv
61.43.Dq
Opis:
Zr-Cu-Ni-Al bulk metallic glass is an attractive alloy system for scientific research and engineering applications. Alloys from this system exhibit high strength, hardness, corrosion resistance and good glass forming ability which makes them useful in many applications. In order to successfully apply amorphous materials, it is necessary to characterize their structure and properties, which are mutually dependent. The mechanical properties of the Zr-based amorphous alloy are the result of its unique, disordered structure. In this experiment, amorphous alloy of desirable composition in the form of a plate with thickness of 2 mm was prepared by melting high purity Zr, Cu, Ni, Al elements and casting into a copper mould by applying an ejection pressure. The amorphousness of rapidly solidified Zr₅₅Cu₃₀Ni₅Al₁₀ plate was examined by X-ray diffraction and microscopic observation. These investigations revealed that the studied Zr-based sample was amorphous. Based on experimental X-ray data the pair distribution function was calculated and discussion on possible atoms arrangement was carried out.
Źródło:
Acta Physica Polonica A; 2016, 129, 2; 216-218
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of technological parameters of the casting process on the structure and selected properties of iron-based metallic glasses
Autorzy:
Pilarczyk, W.
Jung, T.
Babilas, R.
Powiązania:
https://bibliotekanauki.pl/articles/1112027.pdf
Data publikacji:
2016-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.05.cp
81.05.Bx
81.05.Kf
81.70.Bt
81.70.Pg
Opis:
The main aim of this paper was to produce amorphous ribbons with specified composition with the use of various process parameters and X-ray qualitative and quantitative phase analysis after casting and heat treating. Station for ultra-fast cooling of the molten alloy with high vacuum pumps designed for the production of metallic glasses in the form: of ribbons with the use of Bühler Melt Spinner SC was used. The X-ray qualitative and quantitative phase analysis, microscopic observation, microhardness and thermal properties tests of the investigated ribbons were conducted. Based on experimental data the discussion on the correlation between casting process parameters, phase and quantitative composition and heat treatment was carried out.
Źródło:
Acta Physica Polonica A; 2016, 130, 4; 923-926
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selected Properties of ZnO Coating on Mg-Based Alloy for Biomedical Application
Autorzy:
Kania, A.
Pilarczyk, W.
Babilas, R.
Powiązania:
https://bibliotekanauki.pl/articles/1029768.pdf
Data publikacji:
2018-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
68.55.-a
61.05.cp
68.37.Ps
82.45.Bb
Opis:
Magnesium and its alloys are interesting materials for biodegradable implant applications. Magnesium alloys have very good strength properties, they are lightweight, but their main disadvantage is a low corrosion resistance in the physiological environment. Various modifications of a Mg alloys surface by deposition of different coatings are used to prevent untimely dissolution. The article presents the investigation results of a thin ZnO coating deposited on a MgCa2Zn1Gd3 alloy by means of the magnetron sputtering method. The studies include: scanning electron microscope observation of the ZnO surface, X-ray phase analysis, surface roughness measurement in atomic force microscopy, the microhardness test and potentiodynamic corrosion resistance test in the Ringer solution at 37°C. It was found that the ZnO coating is compact and continuous. It increases the hardness of the MgCa2Zn1Gd3 alloy and also improves its corrosion resistance. The corrosion potential is shifted slightly towards the positive values from -1.52 V to -1.50 V for the alloy with the ZnO coating.
Źródło:
Acta Physica Polonica A; 2018, 133, 2; 222-224
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Electrochemical Characterization of Ca₆₅Mg₁₅Zn₂₀ Amorphous Alloy in Selected Physiological Fluids
Autorzy:
Babilas, R.
Szyba, D.
Kania, A.
Pilarczyk, W.
Nowosielski, R.
Powiązania:
https://bibliotekanauki.pl/articles/1029772.pdf
Data publikacji:
2018-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.05.cp
64.70.pe
68.35.bd
82.45.Bb
82.80.Fk
Opis:
The corrosion behavior of the bulk glassy samples of Ca₆₅Mg₁₅Zn₂₀ alloy was studied by electrochemical measurements and immersion tests in a simulated body fluid, physiological fluid, and the Ringer solution. The results of immersion show that the volume of H₂ evolved after 2 h in simulated body fluid (29.8 ml/cm²) is the highest in comparison with the results of measurements conducted in physiological fluid (11.3 ml/cm²) and the Ringer solution (7.4 ml/cm²). The electrochemical measurements indicated a shift of the corrosion potential (E_{corr}) from -1.58 V for plate tested in a physiological fluid to -1.56 V and -1.54 V for samples immersed in the Ringer solution and simulated body fluid, adequately. The X-ray diffraction measurements were used to determine composition of corrosion products. The corrosion products were mainly identified to be calcium carbonates and calcium/magnesium hydroxides.
Źródło:
Acta Physica Polonica A; 2018, 133, 2; 228-231
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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